Federal health officials say a salmonella outbreak linked to Foster Farms chicken that has been going on since March 2013 isn't over. The outbreak has now infected 524 people in 25 states and Puerto Rico. The CDC says the outbreak strains have been resistant to many antibiotics.

Federal health officials say a salmonella outbreak linked to Foster Farms chicken that has been going on since March 2013 isn't over. The outbreak has now infected 524 people in 25 states and Puerto Rico. The CDC says the outbreak strains have been resistant to many antibiotics.